baber/WOPTO huggingface dataset:
Patent GB-715123-A (GB)
Title: Process for preparing threo-1-phenyl-1, 3-diacyloxy-2-amino-propane hydrochlorides
Filed: 1951-05-30
Abstract: The invention comprises threo-1-phenyl-1 : 3-diacetoxy - 2 - aminopropane hydrochloride and threo - 1 - (or - 3 -) dichloracetoxy - 3 - (or - 1 -) acetoxy - 2 - aminopropane hydrochloride (m. pt. 167.5-168.5 DEG  C.), and the manufacture thereof and of other threo-1-phenyl-1 : 3-diacyloxy - 2 - aminopropane hydrochlorides (the term "acyl" denoting -COR where R is alkyl or dihaloalkyl) by dissolving threo-1-phenyl - 2 - amino - 1 : 3 - propanediol or an N-monoacyl derivative thereof in an anhydrous solvent free from alcoholic or basic groups, acidifying with a solution of hydrochloric acid in a solvent of the same type and acylating at temperatures below 35 DEG  C. with the chloride of an organic acid.  When the starting material is an N-mono acyl compound, the acidification causes this to be transformed into an O-monoacyl compound, and the further acylation may, if desired, be effected only when this transformation is complete, and with or without separation of the O-monacyl compound.  In examples (1) threo - 1 - phenyl - 2 - amino - 1 : 2 - propanediol is dissolved in glacial acetic acid, a saturated solution of hydrochloric acid in glacial acetic acid is added, followed by acetyl chloride, and the whole is allowed to stand and then diluted with ether to cause threo-1-phenyl-1 : 3-diacetoxy - 2 - aminopropane hydrochloride to crystallize; (2) threo-1-phenyl-2-amino-1 : 3-propanediol is dissolved in dichloracetic acid and dioxane, a solution of hydrochloric acid in ether is added, followed by dichloracetyl chloride, and, after standing, more ether is added to cause crystallization of threo-1-phenyl-1 : 3 - bis - dichloracetoxy - 2 - aminopropane hydrochloride; (3) threo - 1 - phenyl - 2 - dichloracetylamino - 1 : 3 - propanediol is treated as in (1), but with an interval before the addition of the acetyl chloride, producing threo-1-phenyl-1 - (or - 3 -) dichloracetoxy - 3 - (or - 1-) acetoxy-2 - aminopropane hydrochloride; (4) the solvent in the first part of (3) is replaced by ether and dioxane and the intermediate threo-1 - phenyl - 1 - (or - 3 -) - dichloracetoxy - 2-aminopropan - 3 - (or - 1 -) ol hydrochloride is isolated before the acetylation step.  Specification 715,122 is referred to.
Patent GB-1195969-A (GB)
Title: Improvements in or relating to Self-Supporting Screens for Stone, Ore and like Material.
IPC: B07B1/48
Filed: 1969-03-11
Abstract: 1,195,969. Screen construction. TRELLEBORGS GUMMIFABRIKS A.B. 11 March, 1969 [14 March, 1968], No. 12796/69. Heading B2H. A screen oomprises two crossed .sets of rods 11, 12 and 13, 14 having surfaces of natural or synthetic rubber, the rods being provided with projections 22, 25 which interlock to fix the relative positions of the crossed sets forming a lattice, and the .rods of at least one set 11, 12 being reniforced so that the screen is self-supporting. Some rods 14 of the other set Imay also contain reinforcing members 26. The reinforcing members (15, 19, 20) (Fig. 2, not shown) may accommodate bolts (27) which fasten the two sets together. The screen is mounted on a bracket (30) and clamped in position with a rubber strip (32). The screws may be mounted either in abutting end-to-end relation or at successively lower levels in the screening direction.
Patent GB-1514636-A (GB)
Title: Internal combustion engines of the type wherein an auxiliary combustion chamber is associated with each main combustion chamber and connected thereto by a torch nozzle and an intake manifold system thereof
IPC: F01N3/26
Filed: 1976-03-30
Abstract: 1514636 Heating and cooling IC engine mixture intake manifolds NISSAN MOTOR CO Ltd 30 March 1976 [9 April 1975] 12807/76 Heading F1B The intake manifold 12 for an engine having main and pre-combustion chambers receiving lean and rich mixtures respectively has the bottom walls 16b and 14b of mixture passages 16a and 14a, connected to respective manifold branches 16e to 16h and 14e to 14h, heated by heat transmitted from exhaust gases within the exhaust manifold 22. An engine coolant system 18 adjacent to or integral with the intake manifold 12 is provided to prevent excessive heating of the mixtures by the exhaust heat. The coolant system may include passages 18a to 18d in the manifold 12, between the lean and rich mixture manifold branch passages, connected by passages 18e, 18f and 18g for flow of engine cooling water from and return to cylinder cooling chambers 20. The coolant may be delivered from the engine cooling system upstream and adjacent to a thermostat to chambers (26a), Figs. 4 and 6 (not shown), on either side of the mixture passage 16a connected by a passage (26c) on the side of the passage 16a remote from the passage 14a. A passage connecting the chambers (26a) may extend between the passages 14a and 16a, (Fig. 6). The coolant is delivered to an inlet (26d in one of the chambers (26a) and discharged through an outlet (26e) in the other chamber to the engine coolant system upstream of a pump.
Patent GB-563111-A (GB)
Title: Improvements in or relating to the manufacture of calcium carbonate
IPC: C01F11/18
Filed: 1942-09-14
Abstract: 563,111. Calcium carbonate. FOSTER, W. P., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Sept. 14, 1942, No. 12912. [Class 1 (iii)] Calcium carbonate of small and selected size distribution is obtained by carbonating an aqueous lime slurry in the presence of ammonia or an amine. The process is carried out at temperatures below 70‹ C. and preferably between 20‹ and 45‹ C. From 2-20 per cent CaO and 0.5-5.0 per cent of NH3 are present in the slurry. The product is suitable for use as a filler in paints, printing inks or rubbers. Specifications 431,145 and 562,544 are referred to.
Patent GB-1497826-A (GB)
Title: Analgesic preparations of intensified activity
IPC: A61K31/505
Filed: 1975-03-27
Abstract: 1497826 Analgesic preparations SERVOMED ARZNEI GmbH & CO PHARMA KG 27 March 1975 [1 April 1974] 12931/75 Heading A5B  An analgesic preparation comprises (a) a central active analgesic which exhibits in vivo and in vitro an affinity for blood proteins and (b) orotic acid or a salt thereof, the analgesic being such that a greater part of the analgesic is recoverable from serum by ultra filtration in the presence of the orotic acid compound then in its absence. The analgesic may be codeine, dextropropoxyphene, sodium salicylate or metamizol. The orotic acid salt may be choline orotate. The analgesic and orotic acid compound may be present as the orotate of the analgesic.
Patent GB-633066-A (GB)
Title: Improvements in or relating to machines for grinding wire-drawing dies
IPC: B24B5/48
Filed: 1946-04-30
Abstract: 633,066. Grinding wire - drawing dies. HALIFAX WIREDRAWING DIE CO., Ltd., and DAWTREY, F. April 30, 1946, No. 12957. [Class 60] A machine for grinding wire-drawirig dies, of the kind in which a revolving needle f is reciprocated within the orifice of a die, carried in a holder a, which die is itself revolving and is adjustable rotatably about a vertical axis c<SP>1</SP>, the surface of the needle being supplied with a suitable abrasive and being pressed by spring action against the wall of the die orifice, is characterised in that the part g carrying the reciprocating rotating grinding needle f is mounted slidably in a bracket or member h which is pivotal, at h<SP>1</SP>, about an axis parallel to or aligned with that of the die-holder a when the latter is in central position, a spring being provided at m, which tends to swing the needle holder in a direction to maintain the needle in yielding contact with the wall of the die orifice. The needle holder g is movable axially by means of a lever i bearing on a collar g<SP>1</SP> on the holder against the action of springs j. Means for indicating the attainment of grinding limits include two axially-movable contacts p, r arranged adjacent the bracket h and adapted to be engaged by a contact s on the bracket. The contact p, which is slidable within the contact r, is caused by a spring to project slightly beyond the inner end of the member r, so that an indication can be given just before grinding is complete. When the grinding is completed the machine may be automatically stopped. Alternative indicating means include a lever moved over a resistance, and a voltmeter with an indicating needle.
Patent GB-730831-A (GB)
Title: Hollow section in particular of steel
IPC: B21D53/78
Filed: 1953-05-11
Abstract: 730,831. Aircraft framework; propellers. BRUDER, E., and VAYNE, L. May 11, 1953, No. 13026/53. Classes 4 and 114. [Also in Group XXII] An aircraft component is constructed from sheet metal by forming corrugations 3 and then folding the free ends of the sheet over the apices of the corrugations to join top and bottom closures 7 and 5 respectively and finally bending the extremities of the sheet into contact with the top and bottom closures and welding the joints 14 and 15. An.aerofoil section or hollow airscrew blade may be made by joining corrugations 16 in the metal sheet 1, bending the front end of the sheet to join the leading edge 19 and undersurface 20, bending the rear end of the sheet to form the upper surface 17 and finally welding the seams 21 and 22 and the corrugations to the upper and lower surfaces at 24 and 23 respectively Pipes, storage containers or filling materials for sound deadening or lagging may be inserted in the hollow section. In order to provide a wall thickness tapering towards the tip of the airscrew blade the original metal sheet may consist of a number of superimposed thin sheets placed .in stages above one another and then shaped to the required cross-section. The blade 25 or 26 (Fig. 7) is welded along a seam 28, 29, 30 to an attachment 31 having a forkedshaped holder 27 and the base of the welded seam on the edges of the blade at 30 and 28 is at varying distances from the axis of the airscrew link. Finally, the blade is twisted in a die by means of fluid pressure.
Patent GB-595676-A (GB)
Title: Improvements in means for maintaining the initial positioning of co-operating knitting machine parts
IPC: D04B11/00
Filed: 1944-07-10
Abstract: 595,676. Knitting-machines. TEXTILE MACHINE WORKS. July 10, 1944, No. 13139. Convention date, Dec. 26, 1940. [Class 74 (ii)] In order to prevent the sinkers and dividers in a multi-section straight-bar knitting-machine from being displaced relatively to the needles, due to temperature variations, guide members are rigidly fixed to the centre bed and have surfaces in sliding contact with surfaces on the needle bars so as to maintain the needle bars in correct alignment with the sinker heads. In an example shown in Fig. 4, a needle bar 40 is supported by lifting arms 46 and brackets 44, coupled together by hinge pins 45 having flange portions 72 against which bear screws 75, adjustable in a bracket 73 rigidly fixed to a centre bed 15. Longitudinal movement of the centre bed due to temperature change will cause a corresponding longitudinal movement of the needle bar 40 through the screws 75 and hinge pins 45. During normal operating movements of the needle bar 40, the surfaces of the flange portions 72 slide against the screws 75. In a modification, Figs. 9 and 10, plates 82 are secured to the opposite ends of a needle bar 140 and screws. 81 are threaded into arms 84 fixed to a sinker head 122 to bear against them.
Patent GB-139375-A (GB)
Title: Improvements in and relating to removable undersoles for boots and shoes
IPC: A43B5/00
Filed: 1919-05-26
Abstract: 139,375. Lamb, C. G. May 26, 1919. Athletic overshoes.-An underall, particularly for bowlers, is provided with a flat sole a having an enlargement b on its upper surface to fit beneath the waist of the boot. The heel end d is formed with a recess e to receive the boot heel. The underall is furnished with a toe-cap c, and is secured in place by straps f or other fastenings.
Patent GB-400997-A (GB)
Title: Improvements in or relating to degreasing
IPC: C23G5/04
Filed: 1932-05-06
Abstract: <PICT:0400997/III/1> In a process for degreasing with volatile solvents in which solvent vapours are condensed by water-cooled surfaces, the cooling water is warmed to a temperature above the dew point of the atmosphere, whereby the condensed solvent is free from water. A tank 1 is divided by a heat-insulated wall 4 into chambers 2, 3 each provided with thermostatically controlled heaters 5, 6, and perforated work supports 13.  Chamber 2 is filled with a solvent such as trichlorethylene which flows through an opening 18 into the lower part of chamber 3.  A cooling coil 19 is mounted in the upper vapour space and is connected through pipes 25, 26 to a water main 21 and to a coil 14.  Water flows from the main 21 provided with a valve 23 through the coil 14 where it is heated by the solvent, and the outflowing warmed water passes to the upper coil 19 through a pipe 25.  The desired temperature, indicated by a thermometer 27, may be obtained by admitting cold water to the pipe 25 through a valve 24. Greasy metal articles are first immersed in liquid solvent in chamber 2 and are then transferred to chamber 3 containing solvent vapour. The condensed vapours formed by the coil 19 are collected in a gutter 29 and pass through pipe 32 to a clean solvent tank or are returned through pipe 31 to chamber 2.  If desired solvent vapours are first brought into contact with coil 19 and then with a second cooler surface, the resulting condensate of solvent and water being collected separately.  Specification 389,837 is referred to.
Patent GB-132040-A (GB)
IPC: B21D53/78
Abstract: 132,040. Ireland, A. J. T. Sept. 5, 1918. Screw propellers.-Each face of the blade in a hollow metal propeller consists of a main metal sheet a. Figs. IV and VI, and two liner sheets b, c. The outer ends of the liner sheets are preferably curved, as shown in Fig. IV, so as to give a continuous variation of resistance to bending. The sheets forming the front face of one blade may extend across the hub to form the back face of the opposite blade. The sheets a are welded or otherwise attached along their edges and welded to driving arms d, d<1> which are in the form of rhomboid-shaped plates. In building up the blade, each sheet a has its liners b, c placed in position and clamps C are placed at intervals along the blade, so that the sheets are bent into their correct shape by the shoe C' and screw C<2>. The edges of the main. sheets and liners are then welded together. In order to maintain the correct shape of the blades, short struts f, Fig. II are used. These struts are preferably made with an elongated cross section and the holes in one face of the blade are made of a similar shape so that the strut may be placed in position through the hole, turned through a right-angle to lock it, and then riveted in position. To strengthen the hub portion of the blade, bridge-pieces h<1>, h<2>, h<3>, h<4> are provided and secured to the driving arms d, d<1> by set-screws k. The bridge-pieces may be complete rings, as shown at h<4>. In a modification, the strengthening-pieces may be angular members which extend along the lines at which the blade sheets meet the arms d, d<1> and are provided with transverse webs.
Patent GB-198663-A (GB)
Title: Cinema reflector lamp for cinema projection
IPC: H05B31/00
Filed: 1923-05-17
Abstract: 198,663. Ernemann-Werke Akt.-Ges. May 31, 1922, [Convention date]. Arc lamps. - A projection lamp is provided with lifting handles 3 arranged symmetrically about the centre of gravity, either at right angles to the axis, as shown, or parallel to it. The handles 3 are fixed to lugs 2 on a base-plate 1 and are connected to a cross-piece 4 which forms a bearing for the adjustment gear of a reflector.
Patent GB-863503-A (GB)
Title: Process for the production of boron compounds
Inventor: MILLER CLARK OBER
IPC: C01B35/06
Filed: 1959-04-17
Abstract: Boron trichloride is prepared by reaction of boric oxide, carbon and chlorine in a fluidised bed, the boron trichloride p  being subsequently separated from the effluent reaction gases, characterized in that a finely divided admixture of boric oxide and carbon at a temperature of 1000-1800 DEG F. is contacted with sufficient chlorine to maintain the admixture in a fluidised state, the admixture being first subjected to a preheating treatment at 800-2000 DEG F. for from 1/4 -20 hours and then finely divided.  The carbon may be charcoal or coke but is preferably furnace or lamp black and is used in proportion say 100-200% of the stoichiometric requirement for reaction with the boric oxide and chlorine.  After preheating the admixture of boric oxide and carbon is cooled and finely divided in say a ball or hammer mill to a particle size of 30-200 mesh.  Example (I) refers to fluidising the preheated, finely divided mixture in a heated reaction zone with nitrogen which is replaced by chlorine at or near the reaction temperature, the effluent reaction gases being filtered or otherwise separated from entrained solids and subsequently subjected to cooling with dry ice to condense boron trichloride, excess chlorine, and phosgene from which boron trichloride is recovered.
Patent GB-1548656-A (GB)
Title: Method and apparatus for the determination of start time difference and overall phase shift between two signals
IPC: G01V1/04
Filed: 1976-04-01
Abstract: The time displacement  tau  and total phase difference  phi 0 between two sliding-frequency signals, needed for checking vibrators in the seismic exploration method, are obtained in that for a number of frequencies f contained in these signals, a value  phi (f) specifying the phase relationship, for example the arctan of the quotient of the real part and the imaginary part of the product of the Fourier transform of one signal and the conjugate-complex of the Fourier transform of the other signal, are determined and a straight line g(f) = Af + B, which deviates least from  phi (f), is established. The slope of the straight line A provides the time displacement  tau = A/2 pi  and the ordinate section B provides the total phase difference  phi 0  IDENTICAL  B modulo 2 pi . The relevant device contains, in addition to the signal generator (1), phase shifter network (2), controller (3), vibrator (4), comparison circuit (5) and vibrator baseplate (8) with receiver (6) and test accelerometer (7), also an analog/digital converter and multiplex device (15), a Fourier transformation unit (16), an arithmetic circuit (17) for determining  phi (f) and a circuit (18) for determining A and B with indicating device (20). A circuit (24) with analog display (22) is used for determining the residual phase shift and a circuit (26) is used for determining a statistic measure for the residual phase shift. <IMAGE>
Patent GB-132379-A (GB)
IPC: A47J43/22
Abstract: 132,379. Hookham, K. C. Oct. 10, 1918. Sifting-apparatus, repairing-patches for sieves of.-A perforated mending-patch for sieves &c. may be formed as shown with plain edges and secured to the utensil by split-pins passed through perforations in both, or the edges may have serrations which can be passed through holes in the utensil and turned over to hold the patch in position.
Patent GB-221844-A (GB)
Title: Electric motors
IPC: H02K7/065
Filed: 1923-05-17
Abstract: 221,844. Higgitt, H. V., and Eastern Telegraph Co., Ltd. May 17, 1923. Ratchet gearing.-An electromotor comprises a magnetizable armature and an adjacent movable member both in a common magnetic field adapted to bring them into frictional engagement and cause them to receive a circular movement about a common axis. In one construction, Fig. 2, twoarmatures c, d are loosely mounted upon a spindle b with an iron disc a between them, so that upon energization of the magnet h the armatures adhere to the disc and the whole rotates about the common axis b. When the magnet is deenergized the armatures are returned by springs e, the disc remaining behind. In another construction, Fig. 3, a single armature c is asymmetrically located in the field of a single-limbed electromagnet h and the disc a is non-magnetic.
Patent GB-649456-A (GB)
Title: Improvements in or relating to cooling apparatus for ice-cream mixes
IPC: A23G9/10
Filed: 1948-05-14
Abstract: 649,456. Cooling cans. STERNE & CO., Ltd., L., and CARRUTHERS, D. S. May 14, 1948, No. 13273. [Class 66] [Also in Group VI]  A can in which an ice cream mix is cooled after pasteurization by heating has an internal apertured partition 6 and exterior turbine blades 4, the can being rotated by causing water pumped by a pump 5 over a cooling coil 2 to impinge on the blades.
Patent GB-552653-A (GB)
Title: Improvements in and relating to the filtration of alcoholic beverages and particularly beer
IPC: C12H1/00
Filed: 1941-10-15
Abstract: 552,653. Filtering media. METAFILTRATION CO., Ltd., and PICKARD, J. A. Oct. 15, 1941, No. 13277. [Class 46] [Also in Group III] Alcoholic or other beverages, particularly bottled beers, are filtered in edge-type filters in which kieselguhr, which has been treated with an acid and washed free from soluble bodies, is employed as a filter bed or aid. The kieselguhr may be treated with a mineral acid, preferably a 2 per cent. solution of hydrochloric acid, or an organic acid, e.g. acetic or malic, or sour beer may be used.
Patent GB-143049-A (GB)
Title: Improvements in gas heated glass melting furnaces
IPC: C03B5/235
Filed: 1919-05-27
Abstract: 143,049. Riley, F. G. May 27, 1919. Gaseous-fuel furnaces.-In a reversible regenerative glass-melting furnace, the side walls of the glass tank, above the level of the surface of the molten glass, are formed of burner blocks B provided with horizontal gas ports G and inclined air ports A in communication with the regenerators. The blocks are provided with projections and recesses at B<1>, and also with projectors to support the air and gas flues.
Patent GB-311326-A (GB)
IPC: C10K1/04
Filed: 1929-04-29
Abstract: 311,326. Gewerkschaft M., Stinnes. May 9, 1928, [Convention date]. Condensing and washing processes. - Naphthalene is separated from coal gas by treatment above 30‹ C. with a solvent at ordinary or raised pressure and by subsequent condensation of the solvent vapours with the remaining naphthalene by cooling, the solvent comprising a mixture of oils boiling at low temperatures e.g., 160-220‹ C., and at higher temperatures e.g., above 250‹ C. The latter, e.g., quickly distilled benzene, washing oil, or anthracene oils are in excess. The lighter oil vapours (e.g., first runnings of naphthalene oils or the centrifuged residue oil from the low temperature distillation of light oil) entrained are condensed on cooling and returned to the solvent, preferably after separation from naphthalene by distillation from the mixture or by further cooling. The heavier oil is separated from naphthalene by cooling and re-used. The gas may be raised to above 30‹ C. by compression. The coal gas is subsequently cooled to about 5‹ C. by cold water to remove moisture and traces of oil vapours. Specifications 304,145, 305,545 and 333,297 are referred to.